Curtis 1209B-6402The Curtis controller is mounted under the front of the seat on a 1/4" aluminum plate heatsink. It never gets warm to the touch. The heat sink and controller and batteries are all electrically isolated from the chassis for safety!

Batteries

24 Thunder Sky LFP90, 3.30 Volt, Lithium-IonI have installed a very simple "voltage clamp" circuit on each battery to limit the voltage to 3.8 during charging.
The battery frame / holder was made from 1/4 inch aluminium plates and "L" brackets sprayed with truck bed liner.

System Voltage

80 Volts

Charger

Zivan NG1I use the Zivan as my main charger. I have opened it up and turned the "I" potentiometer all the way down. It charges at less than 10 Amps now, so I have to wait 8 or so hours for a full charge. That's OK. I like to charge slowly and carefully.

Heater

After a ride in Utah weather I reach down and rub my hands all over the motor!

I completed most of the conversion between June and Dec 2007 just working on weekends. The modifications are on-going.

Conversion Cost

About $6,000.00. when considering the Utah state tax incentives. I rode around on my Valence batteries for a year and decided I wanted more range, so I'm on my second set of batteries.
In April '08 I qualified for the clean air tax credit. $2500.00 bucks right off the top of of my 2007 Utah state taxes! YAHOO! I took another $1250 off of my 2008 Utah State Taxes! I sold my old gas engine for $80.00. People tell me there is no way I will ever recover all of the conversion costs with gas savings because I will eventually have to buy new batteries and that I could have just rode my 100cc scooter and saved more money.
I say, "so what, that's not the point". Then I ask "So when will your Mercedes start to pay for itself? Instead of buying & driving a Mercedes you could have bought a forty dollar bus pass each month and saved more money!" I glide to work everyday ( except in Winter ) jamin' to my favorite tunes. It's a joy to ride. I really look forward to my commute. Was it was worth the money? Hell yeah! At least a little bit less of my hard earned cash is going to the oily bastards.